Transmission Problems...
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Transmission Problems...
Hey guys... I tried this in the transmission, differential etc. forum, but no responses there as of yet, so I am trying it here. Here is the question:
I have a 1994 F250 with the 300 and an E4OD transmission. If the truck has not been driven for the day, it shifts very well. No hesitation, no hard shifts. Once it has warmed up, however, it is a different story. The hard shift is noticeable from 1st to 2nd, and especially noticeable from 2nd to 3rd. It is not too bad from 3rd to 4th. The motor does not really wind up and then hard shift, it just slams from gear to gear, and does not make the motor wind out first (as if the torque converter was not functioning properly?). I also only really notice it on upshifts, not downshifts. It seems to get progressively worse as the truck gets hotter and hotter. I drove the truck eighty miles yesterday, and by the end of the trip it was REALLY slammin' on the upshifts. But the downshifts were not noticeable at all. I replaced a broken motor mount last month, and the other motor mounts and the tranny mount are solid. Any ideas?
I have a 1994 F250 with the 300 and an E4OD transmission. If the truck has not been driven for the day, it shifts very well. No hesitation, no hard shifts. Once it has warmed up, however, it is a different story. The hard shift is noticeable from 1st to 2nd, and especially noticeable from 2nd to 3rd. It is not too bad from 3rd to 4th. The motor does not really wind up and then hard shift, it just slams from gear to gear, and does not make the motor wind out first (as if the torque converter was not functioning properly?). I also only really notice it on upshifts, not downshifts. It seems to get progressively worse as the truck gets hotter and hotter. I drove the truck eighty miles yesterday, and by the end of the trip it was REALLY slammin' on the upshifts. But the downshifts were not noticeable at all. I replaced a broken motor mount last month, and the other motor mounts and the tranny mount are solid. Any ideas?
Senior User
Joined: Oct 2007
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i had a similar problem like yours on my 92. im not familiar with the e40d but my dad said that there is a pressure solenoid under the pan that could have gone bad,thus giving you hard shifts. since then i got a 5 speed.
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From: The Sticks
I just replaced the trans in my 97 with 95k miles on the E4OD for the EXACT same reason (although mine also had a stutter between 25-30 mph)...what I was told was that this was a new model trans that had alot of bugs in it.
I went with a Ford reman with a decent warranty, which if memory serves me correct was 3/30, as it was not really cost effective (for me) to have it rebuilt.
Sorry I can't help with a diagnosis, but if you go to a repair shop, they'll probably tell ya the same thing about the bugs. And if you're good enough to fix it, they might give you some pointers on where to start looking.
I went with a Ford reman with a decent warranty, which if memory serves me correct was 3/30, as it was not really cost effective (for me) to have it rebuilt.
Sorry I can't help with a diagnosis, but if you go to a repair shop, they'll probably tell ya the same thing about the bugs. And if you're good enough to fix it, they might give you some pointers on where to start looking.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Before you R&R the transmission there four things that can cause this problem outside of the Transmission.
1. The speed input from the PSOM (Rear end, VSS sensor, ABS module, PSOM problems).
2. The PCM computer in FMEM mode (code 998 & CEL on with other codes).
3. A bad Transmission Range (TR) sensor on the side of the Transmission (some call it MLPS).
4. TPS bad.
1. The speed input from the PSOM (Rear end, VSS sensor, ABS module, PSOM problems).
2. The PCM computer in FMEM mode (code 998 & CEL on with other codes).
3. A bad Transmission Range (TR) sensor on the side of the Transmission (some call it MLPS).
4. TPS bad.
New User
Joined: Feb 2009
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I have had similar problems with my E40D in my 91 f350. I'm running a stock 460 and have had nothing but trouble also. I've got the truck parked till I figure out what to do. On my old truck, I even got a bent pushrod when the E40D decided to randomly pop into neutral with a trailer behind me.
Are these trans even worth rebuilding or should a guy get a TCI or Ford unit to slap in. Or for those of us who already think they are to complex for their own good, use a good 'ol C6.
-Dan
Are these trans even worth rebuilding or should a guy get a TCI or Ford unit to slap in. Or for those of us who already think they are to complex for their own good, use a good 'ol C6.
-Dan
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From: Easton,Ks
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I will try and test the different sensors, as well as see if there are any codes that are shown. Worst case scenario, how much to have it rebuilt or to buy a reman? Under 600? Or would it be better to try my luck and get one at the junkyard?
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From: Easton,Ks
Also here is the test for the MLPS (TR) on the side of the transmission as it stands a good chance of being whats wrong.
http://i54.photobucket.com/albums/g9...tionSensor.jpg
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I was looking in the manual, and it suggests that it is possible to adjust the MLPS sensor. It says to remove the sensor, then to us ethe MLPS adjusting tool and re-install the sensor. What is this tool, and where is it available?
Fleet Owner
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From: Easton,Ks
Yes it needs to be adjusted after install but yours should already be adjusted. This sensor has improved version and you may have to swap wires when you replace it.
The tool you are talking about is: T92P-70010-AH
and can be had at this link:
https://fordspecialtools.com/Display...px?id=1&page=7
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The tool you are talking about is: T92P-70010-AH
and can be had at this link:
https://fordspecialtools.com/Display...px?id=1&page=7
/
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